# Ccrypt

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Ccrypt
> Markdown URL: https://mediated.wiki/source/Ccrypt.md
> Source: https://en.wikipedia.org/wiki/Ccrypt
> Source revision: 1353624682
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Ccrypt" – news · newspapers · books · scholar · JSTOR (April 2024)

**ccrypt** is a utility for the secure [encryption](/source/Encryption) and decryption of [files](/source/File_(computing)) and [streams](/source/Stream_(computing)). It was designed as a replacement for the standard [UNIX](/source/UNIX) [crypt](/source/Crypt_(Unix)) utility, which is notorious for using a very [weak encryption](/source/Weak_encryption) [algorithm](/source/Algorithm).

ccrypt is based on the [Rijndael](/source/Rijndael) [cypher](/source/Cipher), the same cipher used in the [AES](/source/Advanced_Encryption_Standard) standard. However, in the AES standard a 128-bit block size is used, whereas ccrypt uses a 256-bit block size. ccrypt commonly uses the [.cpt](/source/CPT_(file_format)) file extension for encrypted files.

ccrypt does not provide an [authenticated encryption](/source/Authenticated_encryption) scheme and therefore does not protect the integrity of encrypted data.[1]

## See also

- [Free and open-source software portal](https://en.wikipedia.org/wiki/Portal:Free_and_open-source_software)

- [bcrypt](/source/Bcrypt)

- [crypt (Unix)](/source/Crypt_(Unix))

- [mcrypt](/source/Mcrypt)

- [scrypt](/source/Scrypt)

## References

1. **[^](#cite_ref-1)** ["Peter Selinger: Ccrypt – Frequently Asked Questions"](https://ccrypt.sourceforge.net/faq.html#sec).

## External links

- [ccrypt homepage](http://ccrypt.sourceforge.net)

This cryptography-related article is a stub. You can help Wikipedia by adding missing information.

- [v](https://en.wikipedia.org/wiki/Template:Crypto-stub)
- [t](/source/Template_talk%3ACrypto-stub)
- [e](https://en.wikipedia.org/wiki/Special:EditPage/Template:Crypto-stub)

---
Adapted from the Wikipedia article [Ccrypt](https://en.wikipedia.org/wiki/Ccrypt) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Ccrypt?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.